Valve.



N.W. RAGE.

VALVE.

APPLIUATION FILED 31711211, 1912.

Patented June 10,1913.

'1T SHEETS-SHEET'L N. W. RAGE.

VALVE.

APPLIoATIoN 211.31: :mun 17, 191s.

NICHGLAS W. RAGE, or cHrcAGo'; ILrirNIs.

VALVE.

speciaeauon of Letten Patent.

Patente dJu-ne 10; 1913.

Application mea :fine 17, 19'12.v serial no. 704,061.

To all whom #may concern:

Be it known that I, NICHOLAS W. RACE, a citizen of the United States, residing at Chicago, in the county ofCook and State of Illinois, have invented certain new and useful Improvements in Valves, of which the following is a specification: x

This invention relates to valves for controlling the flow ofsteam, water, and other fluids.

One ofthe objects of this invention is to provide a construction in which no obstruction is presented to the flow of the fluid when the valve is open.

Another object of the invention is to provide a` construction in which there is no chamber or recessin which sediment may collect.

Anotherv object is to construct the valve so that it may be repacked while in service.

Another object is to provide an improved seat for the valve.

A further object ,is to improve the construction ofthe valve memberA with a view to facilitating. manufacture and replacement.

A' further object is to improve the construction of the valvevcasingso as to facilitate the insertion and removal of the valve memberi A further` object is to provide improved means for operating the valve member.

In the accompanying drawings, Figure 1 is a central section through a valve embodying the features of'my invention. Fig. 2 is a transverse sectional view taken in pla-ne of dotted line 2,2 of'Fig. 1. Fig. 3 is' atop plan view ofthe valve. Fig. .4 is an elevation of the valve taken from the righthand side of Fig. 1. Fig. 5 is a fragmental opposite portions ofthe tapering surface sectional view of: the operating mechanism.

Fig. 6'is a'section o n line 6 6 of Fig. 5. Fig. 7 is a horizontal sectional view through the' valve casing and the valve member in closed position.

In the embodiment which has been seof which may be the inlet passage, a valve seat, and a chamber-5 into which the valveI member is moved in the operation of opening the valve. The valve seat comprises two portions 4. arrangedto be in contact with of a frusto-conicall valve member hereinafter described; a portion la extendlngbetween the seate portions'l and across the hereinafter described for the smaller endY wallv ofA the valve member. A cylindrical tubular portion 6 is-secured to the valve casing 1 by means of a screw-thread connection 7 said cylindrical portion being provided with a wrench-receiving flange 8. Within thev portion 6 is an annular flange 9 forming a bearing for a valve stem to be presently described.

A frusto-conical valve member 10, tapered to conform to the valve seat por-tions 4'; 4:, is provided at its' larger end, with a stem 11 which is longitudinally slidable in the bearing12 in the cylindrical portion 6. The valve member and its-stem are held against turning movement by means to be later described.l Saidl valve member may be constructed in any suit-able manner, but preferfacilitates renewal or replacement of the valve member when necessary. Said construction also economizes in material. To 'further'l eco-nomize material, the valve stem Amay, if desired, be provided with a longi- :tud'inal aXial bore 14.

In order that particles of scale or sedi-- ment shall not interfere with proper seating of the valve member, I may provide, as hereinshowmfor the smaller end of said :valve member a seat 15 which consists of lead or other relatively soft material.

. Leakage along the valve stem 11 may be Iprevented by suitable means, such, for eX- lample, as packing material 16 of any preferred character placed within the cylin drical portion 6 above the flange 9, said packing being suitably-pressed against the valve stem and the interior walls of the cylindrical portion 6, as'by means of a sleeve 17 fitting within said cylindrical-portion and pressed against the packing by means of a screw plug 18 having a wrench-receiving portion 19. The inner en d of the sleeve 17 ,preferably `has beveled surfacesQG and '21, 4whereby the pressure of said sleeve forces the packing both against the valve stem and the interior walls of the cylindricalA portion. .'Ihe valve member is reciprocated by to the distance between the flanges 25 and 26. The sleeve 22 ma be positioned on the cylindrical portion 6 y placing said sleeve at the outer end of the portion 6 with the enlargement 27 diametrmally opposite the semicircular flange 26; said sleeve may then,

be moved longitudinally of the portion 6 until the enlargement 27 is in contact with the circular flange 25, whereupon the sleeve may be turned into its operative position wherein a portion of the enlargement 27 is below the semicircular flange 26,. The semieircular flange .then serves to prevent the sleeve lfrom being removed. -A semicylindrical filler-piece 28, equal in length to the enlargement 27, lfills the space between the sleeve 22 and the 'portion 6 opposite the enlargement. This p1ece is placed against the tubular portion 6 directly beneath the semicircular flange 26 before the sleeve 22 is slipped over said tubular portion.

The connection between the valve stem 11 and the operatin sleeve 22 is effected by a pin 29 exten ing through said stem, through slots 30, 31 and 32 in the sleeve 17, tubular portion 6 and filler piece 28, respectively, into a cam groove 33 and a cam slot 34 in the operatingsleeve 22. The slots 30 and 31 are straightad serve to prevent rotation of the valve stem and valve member. The slot 32 in the filler-piece 28 is curved to register with the. groove 33. The object in providing the filler-piece 28 is to obtain a substantially equal bearing for both ends' of the pin 29. The outer ,slde'of the slot 34 may,be closed 'or covered in any suitable way, as, for example, by means of a plate` 35 removably secured in place by screws 36.

The anglev of inclination of the cam slots 32 and 34 and the cam groove 33 may be of any desired degree; herein I have shown said slots and groove as having such intobring the openin clination that the valve member may be fully 'unseated in approximately a quarter-turn of the handle or hand-wheel,"A thusj enabling rapid opening and closing of the valve.

To facilitate the. operation of passing the pin 29 through the stem, 11, the outer end of said stem may be provided with a screwdriverslot 37 so that the stem may be turned therein into register with the slots 30 an 31. l

Wlien it is desired to disassemble the valve and remove the valve member, the plate 35 is removed, the pin 29 withdrawn, and the tubular portion 6 unscrewed from the body 1. To facilitate the operation of withdrawing the pin 29, the latter may, if desired, be provided in one end with a screw/threaded opening 38 to receive a suitable tool.

Indicating marks 39 (Fig. 3) may, if de sired, be placed on adjacent portions of the sleeve 22 and portion 6 to indicate the open, closed and partially open positions vof the valvelmember.

4() are openings formed in the sleeve 17 to receive an instrument to be used when necessary in withdrawing the sleeve.

In use, the valve member l() may be scated and unseated by turning the handlel 24 or handewheel 23. Such turning movement causes the Walls of the cam groove 33 and the cam slots 32 and 34 to bear against and move the pin 29 along the straight slots 30 and 31. The movement of the valve member being reciprocatory and non-rotative, there is no rubbing or friction of the valve member upon its seat, and consequently said valve member does notl wear or injure its seat. When the valve member is wholly unseated, the fluid has a straight course through the valve casing.

When the frusto-conical valve member is seated,the pressure of the fluid is exerted against the sides of the valve member, and the de ree of taper of said member is such that te fluid pressure tends to hold th valve member seated rather than to lift the valve member.; hence the sleeve 17 and the packing 16 may be withdrawn and new packing substituted while the valve is in service and the valve membervseated.

If desiredfthe valve may be locked against unauthorized or accidental operatic-n of the hand wheel or handle, by tightening up the screwv plug 18 untilv the pressure of the packing 16 on the valve stem 11 is suiiicient to rendermovement of said valve stem difficult.

Should one side of the valve member 10 become pitted, it may be reversed by withdrawing the pin 29, turning the valve stem f -through a half-revolution, and reinserting the pin.

AIt will be evident that the fluid pressure may be at either side of the valve member 10, and that the valve may be arranged inhcrizontal, upright or inverted position, as may be convenient or desirable. When in upright position, as usual, there is no chamber or recess in which sediment may collect. I y

The embodiment herein disclosed issusceptible of modification, hence the invention is not limited to the details set forth. Y

` I claim as my invention:

1. In a valve, in combination, a valve casing .provided with a valve seat and fluid passages, a valvemember for said seat, a valve stem attached to said valve member,

valve stem attached to said valve member; .a pin extending. through said valve stem and projecting from each side thereof, said valve casing having two straight slots through which the opposite end portions of said pm extend; an operating cam sleeve rotatably mounted on the valve casing and provided with cam slots into which the end portions of said pin extend; two anges on the valve casing, one of the said flanges being arcuate; and a portion onsaid cam sleeve adapted to liebetween said anges to prevent longitudinal displacement 'of said cam sleeve.

3. In a valve, in combination, a valve casing having uid passages, a valve seatand a tu ular portion; a valve member adapted to said seat; a stem attached to said valve member and extending into said tubular portion;

- arcuate flange upon the e(periphery of said a pin attached to said stem, said tubular portion having a slot therein through which said pin extends for preventing rotatiori of said valve stem; a circular iiange and an tubular portion and spac apart; and a cam sleeve rotatably mounted on said flanges and of said having an interior curved portion of a length substantially equal to the distance be` tween said flanges, said curved portion being of such dimensions as to pass the arcuate ange when the cam sleeve is moved longi- `tudinally of said tubular portion, said 1nterior curved portion being adapted to lie between said flanges to prevent longitudinal displacement of the cam sleeve, sald sleeve having cam means adapted to engage said pin to move the latter in the rotation of! the cam sleeve.

4. In a valve, a valve casing having two Huid passages and a valve seat between said passages; a frusto-co-nical valve member having a smaller end wall, said seat comprising two portions arranged to be in contact with opposite portions of the tapering surface of said Valve member, a portion arranged to be in contact with the smaller end wall of said valve member, and a portion extending between the first mentioned two portions and the second mentioned yportion and across the. direction of flow of theiiuid and arranged to be in contact with a portion- 'of thetapering surface of thel valve member, the portlon of the seat against which the smaller end-wall of the valve'member bears being in the same plane as the bottom of one assages, whereby sediment is prevented rom collecting on said seat; and means for moving said valve member.

In testimony whereof I aix my signature in presence of two witnesses.

NICHOLAS W. RACE. Witnesses:

EARL C. CARLSON,

GEQRGE L. CHINDAHL. 

